[PATCH] D129089: [BOLT] Fix concurrent hash table modification in the instrumentation runtime
MichaĆ Chojnowski via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Wed Jul 6 05:36:47 PDT 2022
michoecho updated this revision to Diff 442531.
michoecho retitled this revision from "[BOLT] Fix concurrency bugs in the instrumentation runtime" to "[BOLT] Fix concurrent hash table modification in the instrumentation runtime".
michoecho edited the summary of this revision.
michoecho added a comment.
I have removed the Mutex fix from the diff, since the alternative fix (https://reviews.llvm.org/D129162) has been merged.
The `__bolt_instr_data_dump()` fix remains.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D129089/new/
https://reviews.llvm.org/D129089
Files:
bolt/runtime/instr.cpp
Index: bolt/runtime/instr.cpp
===================================================================
--- bolt/runtime/instr.cpp
+++ bolt/runtime/instr.cpp
@@ -289,6 +289,7 @@
/// Traverses all elements in the table
template <typename... Args>
void forEachElement(void (*Callback)(MapEntry &, Args...), Args... args) {
+ Lock L(M);
if (!TableRoot)
return;
return forEachElement(Callback, InitialSize, TableRoot, args...);
@@ -378,7 +379,6 @@
template <typename T, uint32_t X, uint32_t Y>
void SimpleHashTable<T, X, Y>::resetCounters() {
- Lock L(M);
forEachElement(resetIndCallCounter);
}
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